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Sensors 2014, 14(1), 1010-1027; doi:10.3390/s140101010

Managing the Number of Tag Bits Transmitted in a Bit-Tracking RFID Collision Resolution Protocol

Deusto Institute of Technology (DeustoTech), University of Deusto, Bilbao 48007, Spain
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Received: 15 November 2013 / Revised: 27 December 2013 / Accepted: 2 January 2014 / Published: 8 January 2014
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [834 KB, 21 June 2014; original version 21 June 2014]   |  

Abstract

Radio Frequency Identification (RFID) technology faces the problem of message collisions. The coexistence of tags sharing the communication channel degrades bandwidth, and increases the number of bits transmitted. The window methodology, which controls the number of bits transmitted by the tags, is applied to the collision tree (CT) protocol to solve the tag collision problem. The combination of this methodology with the bit-tracking technology, used in CT, improves the performance of the window and produces a new protocol which decreases the number of bits transmitted. The aim of this paper is to show how the CT bit-tracking protocol is influenced by the proposed window, and how the performance of the novel protocol improves under different conditions of the scenario. Therefore, we have performed a fair comparison of the CT protocol, which uses bit-tracking to identify the first collided bit, and the new proposed protocol with the window methodology. Simulations results show that the proposed window positively decreases the total number of bits that are transmitted by the tags, and outperforms the CT protocol latency in slow tag data rate scenarios. View Full-Text
Keywords: RFID; anti-collision; tree; CT; window RFID; anti-collision; tree; CT; window
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Landaluce, H.; Perallos, A.; Angulo, I. Managing the Number of Tag Bits Transmitted in a Bit-Tracking RFID Collision Resolution Protocol. Sensors 2014, 14, 1010-1027.

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